204 citations · 653 across the 11 of their papers we have counts for
11 papers
On-chip stencil lithography for superconducting qubits
Roudy Hanna, Sören Ihssen, Simon Geisert +22
Improvements in circuit design and more recently in materials and surface cleaning have contributed to a rapid development of coherent superconducting qubits. However, organic resi…
Dispersive Qubit Readout with Intrinsic Resonator Reset
M. Jerger, F. Motzoi, Y. Gao +9
A key challenge in quantum computing is speeding up measurement and initialization. Here, we experimentally demonstrate a dispersive measurement method for superconducting qubits t…
Observation of Josephson Harmonics in Tunnel Junctions
Dennis Willsch, Dennis Rieger, Patrick Winkel +27
Approaches to developing large-scale superconducting quantum processors must cope with the numerous microscopic degrees of freedom that are ubiquitous in solid-state devices. State…
Magnetic-field resilience of 3D transmons with thin-film Al/AlO/Al Josephson junctions approaching 1 T
J. Krause, C. Dickel, E. Vaal +6
Magnetic-field-resilient superconducting circuits enable sensing applications and hybrid quantum-computing architectures involving spin or topological qubits and electro-mechanical…
Observation and stabilization of photonic Fock states in a hot radio-frequency resonator
Mario F. Gely, Marios Kounalakis, Christian Dickel +5
Detecting weak radio-frequency electromagnetic fields plays a crucial role in wide range of fields, from radio astronomy to nuclear magnetic resonance imaging. In quantum mechanics…
Simple, smooth and fast pulses for dispersive measurements in cavities and quantum networks
Felix Motzoi, Lukas Buchmann, Christian DIckel
We demonstrate a dispersive measurement pulse shaping technique that allows for arbitrarily fast quantum non-demolition, single-quadrature measurements of non-linear systems and un…
Tuneable hopping and nonlinear cross-Kerr interactions in a high-coherence superconducting circuit
M. Kounalakis, C. Dickel, A. Bruno +2
Analog quantum simulations offer rich opportunities for exploring complex quantum systems and phenomena through the use of specially engineered, well-controlled quantum systems. A…
Evolution of Nanowire Transmons and Their Quantum Coherence in Magnetic Field
F. Luthi, T. Stavenga, O. W. Enzing +8
We present an experimental study of nanowire transmons at zero and applied in-plane magnetic field. With Josephson non-linearities provided by the nanowires, our qubits operate at…
Experimentally simulating the dynamics of quantum light and matter at ultrastrong coupling
N. K. Langford, R. Sagastizabal, M. Kounalakis +6
The quantum Rabi model describing the fundamental interaction between light and matter is a cornerstone of quantum physics. It predicts exotic phenomena like quantum phase transiti…
Active resonator reset in the nonlinear dispersive regime of circuit QED
C. C. Bultink, M. A. Rol, T. E. O'Brien +8
We present two pulse schemes for actively depleting measurement photons from a readout resonator in the nonlinear dispersive regime of circuit QED. One method uses digital feedback…
Characterization of S-T Transition Dynamics via Correlation Measurements
Christian Dickel, Sandra Foletti, Vladimir Umansky +1
Nuclear spins are an important source of dephasing for electron spin qubits in GaAs quantum dots. Most studies of their dynamics have focused on the relatively slow longitudinal po…